I think it was a great course. Its does not just teach how to trick the test but makes you understand the concepts, which will help you succeed. The teacher was great at the verbal section and data sufficiency section. I learned a lot. You will also learn tricks which you would have not seen before. We had out own class website will all the notes, which I thought was neat. The teacher was also up to date on GMAC's policy. I still do not know how much my score improved but I know that my speed in accuracy in verbal increase a lot.